EXT4 for MAC cannot mount

Hi,

We bought NTFS & EXTFS for Mac a few months ago and since last week it doesn't work, we have uninstalled and reinstalled but it still doesn't work, what can we do?
We have a macOS Catalina 10.15.7
We urgently need to repair EXTFS to be able to see Ext4 hdd

I apologize for the translator.

Like in my other post, try detaching and reattaching the drive AFTER MacOS has booted, and extFS drivers loaded.